Mounting caps for aerosol dispenser



Sept. 6, 1966 sEllcHl KITABAYASHI 3,270,924

MOUNTING CAPS FOR AEROSOL DISPENSER Filed Sept. 17, 1964 INVENTOR. SEICH KITABHYASHI United States Patent O 3,270,924 MOUNTING CAPS FOR AERGSLDISPENSER Seiichi Kitabayashi 2-2246 Nishisugamo, Toshima-ku, Tokyo,Japan Filed Sept. 17, 1964, Ser. No. 397,333 Claims priority,application Japan, Sept. 19, 1963, 38/49,4tl6 1 Claim. (Cl. 222-394) Thepresent invention is concerned with mounting caps for aerosol dispensershaving a pressure container containing a liquid under pressure, adischarge valve means and a push button for operating said valve means,with said push button having an emission nozzle.

An object of the present invention is to provide yan economicallyproduceable and especially a mass-produc tion feasi-ble sealing meansfor aerosol containers containing a gas dissolving liquid generallyunder several atmospheric pressures.

Heretofore, mounting caps for sealing .means for aerosol dispensers,regardless of whether bottles -or cans, are `made of metal plates. Theyare of a cup-like form having a brim at the upper edge. The cup-likeportion is inserted into the mouth of a bottle or can and said cuplikeportion is fixed to the container by means of enlarging sidewards theside wall lower portion of the cup mechanically for sealing -thecontainer mouth.

Accordingly, old or known mounting caps cannot be fixed to cans orbottles without a special machine tool. Moreover, good aerosol dispenserarticles often do not result from the above-mentioned mechanical work.

However, according to the present invention, not only theabove-mentioned drawbacks of old mounting caps for aerosol dispenser areremoved but the present invention can provide a big advantage in themass-production of aerosol dispensers.

The effects and advanatges of the present invention will be betterunderstood by reference to the following description taken in connectionwith the accompanying drawings, in which:

FIG. 1 is a vertical sectional view of a mounting cap for an aerosoldispenser according to the present invention mounted on the mouth endportion of an aerosol container and equipped with a discharge means.

FIG. 2 is a vertical sectional view of a modified form of the mountingcap for aerosol dispenser according to the present invention mounted onan aerosol container and equipped with 'a discharge means.

A mounting cap for aerosol dispenser according to the present inventioncomprises a disc 1 molded in a resilient synthetic resin with said dischaving an annular wall member 2 pendent from lthe bottom face thereofand a tubular member 6 extending upwards at the center thereof. Saidannular wall member 2 -has an outer wall face 3 for engaging an aerosolcontainer mouth 4 lower end at the upper portion of said wall face. Saidtubular member 6 is provided with a lower bore 8, communicating with theopening in said disc bottom face, and an upper bore 9, of smallerdiameter than the bore 8, and closed at its upper end. A step 18 in themember 6, above the bore 8 provides an annular recess 6a, coextensive atits upper end with the closed end of the small bore 9. A plurality ofside orifices 10 extend between the recess 6a and the smaller bore 9.

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The mounting cap for the aerosol dispenser according to the presentinvention is mounted on an aerosol container 5 by inserting the annularwall member 2 in the container mouth 4. The diameter of the containermouth should be designed equally to the diameter of the annular memberouter wall 3 and a little shorter than the same. The annular wall memberouter wall 3 engages most solidly with the container mouth lower edge ifthe same edge is designed for being bent inwardly as shown in bothfigures. The mounting cap cannot be fixed for sealing the containermouth by a mere insertion of the mounting cap annular wall member 2 inthe container mouth. However, when the container 5 is filled with apressure gas or a liquid under pressure the container inner pressurecharges in the direction of the arrow a, or in the direction for pushingout the mounting cap, as well as said pressure charges in t-he directionof the arrow b, or in the direction for holding the annular wall member2 to the mouth edge 4. Yet, as the annular member 2 is molded in a bodywith the disc 1 in a resilient synthetic resin, the same member 2 bendstoward the mouth edge 4 and is held solidly to the same for completingla gastight seal of the container mouth.

As described above, -a mounting cap according to the present inventionis not fixed to an aerosol container by a special ymachine tool as withan old mounting cap but is fixed solidly by means of simply filling thecontainer.

A mounting cap for an aerosol dispenser according to the presentinvention has a tubular member 6 molded as one body with the disc 1 andwhich tubular member 6 enables the structure of the discharge valve foraerosol dispenser to be very simple. 11 is a rubber ring forming a partof a discharge valve and seated in recess 6a normally closing sideorifices 10 communicating with the tubular member axial bore 8. A pushbutton 12 is mounted on the rubber ring 11 `and is provided with a lowercavity 13 facing ring 11 and an upper cavity 14 with said cavities beingconnected to each other and to an emission orifice 15.

When the push button 12 is pushed downwards the rubber ring 11 yieldsoutwardly, and the side orifices 10 com municates with the emissionorifice 15 for emission of aerosol pushed up by the container innerpressure.

A steel ball 16 shown in FIG. l serves as a check valve means forpreventing refilling of the container through the tubular member axialbore S. And, small slits 17 are provided in the annular wall member 2 ofthe modified mounting cap of FIG. 2 serves for enlarging the bend of thesame member at the insertion of the same in the container mouth. 7 is aneductor tube for aerosol solution.

Having thus described my invention what I claim is:

A mounting cap vfor aerosol dispensers comprising a disc of a resilientsynthetic resin having an annular w-all member pendant from the bottomface of said disc and a tubular member extending from the center of theupper face of said disc, said annular wall member having an outer lwallface capable of closely engaging the lower end of the mouth of theaerosol dispenser at an inner portion of said outer wall face, saidtubular member being provided with a peripheral step, an axial boreclosed at one end and opening at said disc bottom face and side orificesopening above said peripheral step and in said bore adjacent the closedend of said bore, a rubber ring having a pair of ends with one endmounted on said annular step normally closing said side orices, a pushbutton being mounted on said rubber ring other end and having anemmision orifice, inner cavities communi eating with said orice and oneof said inner cavities facing said rubber ring for receiving aerosolmaterial 5 from said side orifices when said push button is movedagainst said rubber ring and thereby opens said side orifices.

References Cited by the Examiner UNITED Ogren 222-569 X 10/1959 Taylor222-569 X 11/1959 Krautkramer 222-569 X 5/ 1961 Focht.

4/ 1962 Schmidt 222-569 X 2/ 1963 Stocker 239-579 3/ 1963 Goceliak222-498 X 4/ 1965 Meshberg 239-579 X 7/ 1965 Kitabayashi 222-394 FOREIGNPATENTS 4/ 1906 Germany. 7/ 1960 Italy.

RAPHAEL M. LUPO, Primary Examiner.

